Plasma cutting method and plasma cutting apparatus
a cutting method and plasma technology, applied in plasma welding apparatus, manufacturing tools, welding/soldering/cutting articles, etc., can solve the problems requiring a lot of time and labor, and requiring a large amount of secondary fabrication. to achieve the effect of shortening the work period
Active Publication Date: 2016-11-15
KOIKE SANSO KOGYO CO LTD
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The present invention provides a method and apparatus for plasma cutting that enables creating curved upper and lower edges on a cutting object. This allows for a combination of vertical, bevel, and upper / lower edge cutting, enhancing the flexibility of the plasma cutting process.
Problems solved by technology
Much time and great labor are needed to perform the secondary fabrication to the upper and the lower edges of the cutting member, which is cut from the steel plate, along the exposed surface as described above.
This becomes a significant problem in shortening the work period.
Method used
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first embodiment
[0054]A preferred embodiment of a cutting apparatus according to the present invention will be described below with reference to the drawings, and also the cutting method will be described. FIG. 1 is a schematic view illustrating a structure of a cutting apparatus. FIG. 2 is a schematic view for explaining a structure of a plasma torch. FIG. 3 is a block diagram of a control system. FIG. 4 is a view for explaining the shape of a cutting plane when a cutting object is cut.
[0055]Firstly, the shape of a cutting plane when a cutting object C is cut by a plasma torch B in a cutting apparatus A will be described with reference to FIG. 4. FIG. 4A illustrates that the cutting object C is cut in such a manner that an upper edge 31a and a lower edge 31b of a cutting plane 31 are R-cut in a curved shape. The radius of the curved surface at each edge 31a and 31b is not particularly limited. The upper edge 31a and the lower edge 31b may have the curved surface from which a coated film is difficu...
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Abstract
The present invention relates to a cutting method for cutting an upper edge and a lower edge of a cutting plane into a curved shape, when a cutting object is cut by supplying plasma gas to the periphery of an electrode of a plasma torch and ejecting plasma arc from a nozzle. In order to melt the upper edge and the lower edge of the cutting plane to form a curved shape, at least one condition selected from plural conditions including a cutting electric current, cutting speed, height of a plasma torch, angle of the plasma torch, and flow rate of plasma gas upon performing the vertical cutting for forming the upper edge and the lower edge of the cutting object substantially at right angles is changed.
Description
TECHNICAL FIELD[0001]The present invention relates to a cutting method for cutting an upper edge and a lower edge of a cutting plane in a curved shape, when a cutting object represented by a steel plate is cut, and a plasma cutting apparatus that can selectively perform a cutting in which the upper edge and the lower edge of the cutting plane is cut in a curved shape, a cutting in which the cutting plane is vertically cut, and a bevel cutting.BACKGROUND ART[0002]An iron and steel structure represented by a bridge, for example, is formed in such a manner that a cutting member obtained by cutting a steel plate in a desired shape is welded to form a great number of structural members, and these structural members are assembled. Therefore, the end portion of the cutting member, which constitutes the individual structural member, is classified into a welded surface that is welded to the other cutting member and an exposed surface that is exposed without being welded.[0003]The cutting mem...
Claims
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IPC IPC(8): B23K10/00
CPCB23K10/00B23K10/006B23K2201/18B23K2203/04B23K2101/18B23K2103/04
InventorKOIKE, TETSUOFURUJO, AKIRAHIRAI, RYUTA
OwnerKOIKE SANSO KOGYO CO LTD